Trial
Look AHEAD
Research Observatory
Evidence Update
Current evidence
Look AHEAD compared intensive lifestyle weight loss and physical activity with diabetes support and education in adults with type 2 diabetes. Its cardiovascular and mobility analyses come from the same randomization. Look AHEAD's intensive weight-loss lifestyle programme did not significantly reduce the primary cardiovascular composite in adults with type 2 diabetes. Look AHEAD's functional analysis found less mobility loss with intensive lifestyle intervention despite the separate cardiovascular null result.
What changed
Look AHEAD's mobility and cardiovascular reports use the same randomization; their different endpoints can legitimately have different conclusions.
What did not change
Mobility odds are not cardiovascular risk, survival or a universal weight-loss verdict.
Why it matters
Gives customers an outcome-specific healthspan interpretation.
Main limitation
Not equivalence, not a denial of other functional benefits. The secondary-composite correction adds angina hospitalization to Table 2 secondary-composite reporting; primary effect unchanged. Self-report and modeled states; OR is not an absolute risk reduction or mortality effect. Slightly more year-1 musculoskeletal symptoms.
Next proof
Independent confirmation of durable functional outcomes and separately prespecified cardiovascular outcomes.
Summary
Look AHEAD compared intensive lifestyle weight loss and physical activity with diabetes support and education in adults with type 2 diabetes. Its cardiovascular and mobility analyses come from the same randomization. Look AHEAD's intensive weight-loss lifestyle programme did not significantly reduce the primary cardiovascular composite in adults with type 2 diabetes. Look AHEAD's functional analysis found less mobility loss with intensive lifestyle intervention despite the separate cardiovascular null result.
Intelligence Take
Gives customers an outcome-specific healthspan interpretation.
Limitations
Not equivalence, not a denial of other functional benefits. The secondary-composite correction adds angina hospitalization to Table 2 secondary-composite reporting; primary effect unchanged. Self-report and modeled states; OR is not an absolute risk reduction or mortality effect. Slightly more year-1 musculoskeletal symptoms.